Safety-blocks for boat-falls and other purposes.



E. EKBLOM' v SAFETY BLOCKS FOR BOAT FALLS AND OTHER PURPOSES.

APPLICATION FILED MAY 12,1913.

1,096,83 1 Patented May 19, 1914.

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EXEL EKBLOM, OF LONDON, ENGLAND.

SAFETY-BLOCKS FOR BOAT-FALLS AND OTHER PURPOSES.

Specification of Letters Patent. Patented May 19 1914L Serial No.767,201.

Application filed May 12, 1913.

more holes through which the rope is passed.

To all whom it may concern Be it known that I, Exnn EKnLoM, a citi- Theplate may be of any suitable size and Zen of the United Kingdom 0t Greatwhile I pre'lterably use a three sheave pulley orblock I find it is videa plate having only necessary to protwo holes, one on each side, througheach of which one of the lengths of the rope is passed. Two of thesebottom blocks are used as usual and I join Britain and Ireland, andresident of 76 Avenons road, Plaistow, London, England, have inventedcertain new and useful I111- provements in Safety-Blocks for Boat-Fallsand other Purposes, of which the following is a specification, such aswill enable others them together by a cord, bar or the like. skilled inthe art to which it appertains to The Weight if used may be of anysuitable make and use the same. shape and be fixed to the pulley in anydo- This invention relates to improved safety sired manner. blocks orpulleys and is particularly de- I will now describe my invention withsigned for use with boat falls on board ship, reference to theaccompanying drawings, the object of the invent-ion being to make or inwhichprovide the said blocks or pulleys with Figure 1 is a top view ofan ordinary means which will prevent them turning over sheave pulleyblock (LtO which a double guide when the weight of the boat is removed.plate I) is fitted. The drawings also show in It. is well known that whn boats are dotted lines a side extension 0 to which a lowered fromdavits at the side of a ship rope or the like could be attached for thethat after the boat has been released and purpose of joining a pair ofblocks together the falls are being pulled up on to deck as showndiagrammatically in Fig. 4. Fig. g i f the purpose of atta hing them to2 1s a side elevation of the block shown in another boat, the bottomblocks or pulleys, Fig. l and Fig. 3 is a side elevation of 0 that is tosay those next to the boat, tre- .Flg- 2. quently turn over and in doingso twist the In Figs. 2 and 3 a weight (1 is shown on ropes and mix sameso that it is not possibl the inside of the block above the loop 6 toproperly pull back the rope and when upon which the boat is hung. Itwill b this occurs the whole r'all is usually pulled observed that theplate I) acts as a guide to 35 on to deck by grasping the ropes betweenthe center cord on the block and it will be the top pulley (the pulleyon the davit) obvious that as this cord passes through the and thebottom pulley, after which the ropes ho es 1) on the guide plate 6 onopposite are straightened and properly gathered so sides of the blockthe latter can not easily as to permit correct lowering of th n xt, turnand so twist the ropes or it it should boat. This straightening of thero and be turned it will quickly rc-adjust itself so re-adjustment of hefalls involves serious that the ropes hang correctly. delay and requiresconsiderable deck room In Fig. at a pair of two sheave blocks are shownsupporting a boat. These have guide plates and side extensions 0, thesaid ex- 9. tensions being joined together by a rope or equivalent uponwhich a weight g is placed, the tendency of the said weight being todraw the blocks toward each other and thereby prevent them fromtwisting. 1

\Vhat I claim and desire to secure by Letters Patent is 1. Incombination a each comprising a block, leys mounted on the block, a ropepassed around the said pulleys and guides through which the rope passesmounted on the block, lateral extensions on the block and a ropedirectly connecting the free ends of the extensions together.

2. In combination, a pair of boat falls each comprising a block, aplurality of puland it 1s to obviate this confusion of the ropes that myinvention is primarily designed.

My invention may be broadly described as consisting in providing thebottom blocks or pulleys with improved means which will keep them fromtwisting or falling over. A suitable way to accomplish this is toprovide one or more guide plates or equivalents of known or suitableform on each bottom block through which one or more lengths of rope arepassed, the said plate or equivalent being on the upper end of thepulley and to connect the said two bottom blocks to each other by anysuitable means and also if desired, to weight the lower end of thepulleys. A simple construction is to provide on the top of the pulley aplate extending sidewardly and having in it one or pair of boat fails aplurality of pulleys rotatably mounted therein, a guide ing toward theother block and a pair of plate fitting around said block and providedguide arms having terminal holes, a rope with a lower loop, a lateralextension pointpassing around said pulley and through ing toward theother block and a pair of said holes, a weight in said lower loop, and 5guide arms having terminal holes, a rope an eye suspended from saidloop; a rope 20 passing around said pulley and through connecting thefree ends of said extensions; said holes, a Weight in said lower loop,and and a weight at the center of said rope, said an eye suspended fromsaid loop; a rope arms and extension being perpendicular toconnectingthe free ends of said. extensions; each other.

'10 and a Weight at the center of said rope. In witness whereof I havehereunto set 25 3. In combination, a pair of boat falls my hand inpresence of two witnesses. each comprising a block, a plurality of pul-V EXEL EKBLOM. leys rotatably mounted therein, a guide Witnesses: platefitting around said block and provided H. D. JAMEsoN, 16 with a lowerloop, a lateral extension point- WM. FREESTONE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

